*tool/tul; tuːl/ n [C] 1 something such as a hammer or a SCREWDRIVER which you use to make or repair things 工具: a tool kit (=a set of tools) 一套工具 2 something that can be used for a particular purpose 为某个目的所用之物: Home computers can be used as a tool for learning. 家用电脑可被用作学习工具。